This review of the shotcrete literature of the past 80 years, addresses the issue of the durability of dry-mix shotcrete. The controversy over the lack of air entrainment and the freeze-thaw durability of dry-mix shotcrete are discussed, as well as application equipment, high versus low velocity shotcrete, and shotcrete materials. It is noted that the maximization of the physical properties of shotcrete can only be expected if the in-place product is of high quality. It is also noted that certain non-air-entrained concretes, including dry mix shotcrete, can be durable freeze-thaw material. It is believed that the quality of in-place shotcrete, including durability, is directly proportional to the exit velocity from the nozzle. Test results indicate that a nominal addition of silica fume to standard portland cement mixes has very beneficial effects on the durability properties of dry mix shotcrete. It is also pointed out that strength alone is not an absolute indicator of concrete durability, and lack of entrained air does not mean concrete will fail under freeze-thaw conditions.

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 78-85
  • Serial:
    • Concrete International
    • Volume: 11
    • Issue Number: 8
    • Publisher: American Concrete Institute (ACI)
    • ISSN: 0162-4075

Subject/Index Terms

Filing Info

  • Accession Number: 00486818
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 31 1989 12:00AM